feat: add diagnostic and management scripts for DNS, NPM, and cluster infrastructure

scripts/test_dns_vips.py

@@ -0,0 +1,62 @@
+import socket
+import sys
+
+sys.stdout.reconfigure(encoding='utf-8')
+
+# Simple DNS query packet generator
+def make_query(name, qtype=1): # 1=A, 12=PTR
+    import random
+    txid = random.randint(1, 65535)
+    flags = 0x0100 # standard query, recursion desired
+    qdcount = 1
+    header = txid.to_bytes(2, 'big') + flags.to_bytes(2, 'big') + qdcount.to_bytes(2, 'big') + b'\x00\x00\x00\x00\x00\x00'
+    qname = b''.join([bytes([len(p)]) + p.encode('ascii') for p in name.split('.')]) + b'\x00'
+    question = qname + qtype.to_bytes(2, 'big') + (1).to_bytes(2, 'big') # class IN
+    return header + question, txid
+
+def query_server(server, name, qtype=1, port=53):
+    packet, txid = make_query(name, qtype)
+    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    s.settimeout(3.0)
+    try:
+        s.sendto(packet, (server, port))
+        data, _ = s.recvfrom(1024)
+        # Parse basic response
+        ancount = int.from_bytes(data[6:8], 'big')
+        return True, ancount
+    except Exception as e:
+        return False, str(e)
+    finally:
+        s.close()
+
+targets = [
+    ("Aerodrome DNS VIP (140.44.4.36)", "140.44.4.36"),
+    ("Spaceport DNS VIP (140.44.4.65)", "140.44.4.65"),
+]
+
+queries = [
+    ("sninfr2lnxctl01.snarfnet.net", 1),
+    ("sn-nas.snarfnet.net", 1),
+    ("gateway.snarfnet.net", 1),
+    ("app-test.snarfnet.net", 1), # Wildcard
+    ("11.4.44.140.in-addr.arpa", 12), # Reverse PTR
+    ("google.com", 1), # Upstream DoH recursion
+]
+
+print("=======================================================")
+print("          TESTING DNS VIPS PORT 53 RESOLUTION          ")
+print("=======================================================")
+
+for s_label, server in targets:
+    print(f"\n--- Testing {s_label} ---")
+    for q_name, qtype in queries:
+        ok, res = query_server(server, q_name, qtype)
+        if ok and res > 0:
+            print(f"  ✓ {q_name:<30} -> Resolved ({res} answers)")
+        elif ok and res == 0:
+            print(f"  ? {q_name:<30} -> 0 answers returned")
+        else:
+            print(f"  ✗ {q_name:<30} -> Error: {res}")
+
+print("\n=======================================================")
+